zetor

ESSENTIAL TECHNICAL PARAMETERSTECHNICAL SPECIFICATIONS OF ENGINES OF TRACTORS Z 6421 - Z 8441Type of tractor Z 6421/Z 6441 Z 7421/Z 7441 Z 8421/Z 8441Type of engine 7205 1105 1205Enginecompression ignition, 4-stroke cycle, direct fuel injection, turbochargedEngine designin-line, vertical, water-cooledNumber of cylinders 4Stroke volume cm 3 4156Bore x stroke mm 105x120Nominal speed min -1 2,200Order of injection 1-3-4-2Compression ratio 17Max. override speed min -1 2,460Idle speed min -1 800±25Net power at nominal speed,measured acc. to ISO 2288kW 45 53 60Specific fuel consumption atthe given powerg.kW -1 .h -1 257 255 257Max. torque (Mt) Nm 265 310 351Excess of Mt % 35 35 35Lubrication of enginePressure system with gear pumpMax. consumption of oil after100 Mh of engine running-ing.kW -1 .h -1 0.7 0.7 0.7Pressure of oil at enginenominal speed and temperatureMPa 0.2 - 0.5 0.2 - 0.5 0.2 - 0.5of oil 80 °CMinimum pressure of oil at750 rpm and oil temp. 80 °CMPa 0.05 0.05 0.05Max. temp. of cooling fluid °C 10634